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October 19, 2026
'Cultural Studies Seeks to Understand What Lies Beneath the Surface of Everyday Things'
Maxim Zhiganov has been exploring different aspects of sound for many years—first in relation to his native Perm and then on a broader, global scale. In this interview for the HSE Young Scientists project, he talks about sound maps, the special issue of the journal Logos, and why it is important to make the familiar less clear and obvious.
October 14, 2026
At HSE University–St Petersburg, Experts Discuss How AI Changes Tourist Routes and Cultural Heritage
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Worldwide, road injuries are the leading cause of death among males aged 10–39. An international team of researchers reached this conclusion as part of the Global Burden of Disease Study 2023, analysing data from 204 countries between 1990 and 2023. Their findings have been published in The Lancet Public Health, with HSE University Professor Vasily Vlassov listed among the collaborators.

 

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О геометрии расслоенных псевдоримановых многообразий

С. 50–54.
Yakovlev E., Гончар Т. А.

The relations between the geometric properties of fibered pseudo-Riemannian manifolds and their
bases are investigated. Special attention is paid to Lorentzian manifolds and causality conditions.
Keywords: principal bundle, G-connection, lorentzian manifold, space-time, causality condition

Language: Russian
Full text
Text on another site
Keywords: principal bundleG-connectionLorentzian manifoldspace-timecausality conditionглавное расслоениеG-связностьлоренцево многообразиеусловие причинностипространство-время
Publication based on the results of:
Теория динамических систем и ее приложения (2021)

In book

Международная конференция «Современная геометрия и её приложения - 2019»: сборник трудов
Каз.: Издательство Казанского университета, 2019.
Similar publications
Lorentzian Principal Bundles with Compact Structure Groups and Causal Properties
Yakovlev E., Maksimov D. A., Mathematical notes 2026 Vol. 120 No. 3 P. 483–496
Smooth principal bundles whose total spaces and bases are time oriented Lorentzian manifolds and whose projections are Lorentzian submersions preserving time orientations are studied. Previously, the authors showed that the chronologicity, causality, and stable causality always lift from the base to the space of a Lorentzian bundle. For strong causality and global hyperbolicity, this holds ...
Added: September 24, 2026
Causal Properties of Lorentzian Manifolds and Regular Coverings
D. A. Maksimov, Yakovlev E., Lobachevskii Journal of Mathematics 2024 Vol. 45 No. 8 P. 3924–3934
Regular coverings of Lorentzian manifolds are studied under the assumption that the covering map is isometric and preserves time orientation. Conditions for the covering manifold are obtained that are necessary and sufficient for the base to be chronological, causal, strongly or stable causal, and also globally hyperbolic manifold. As a corollary, statements are obtained that ...
Added: November 23, 2024
«Контрфинальность» в социологической теории: реконцептуализация понятия
Latypov I., Вестник Российского университета дружбы народов. Серия: Социология 2021 Т. 21 № 4 С. 697–710
Counterfinality is defined as unintended consequences of the uncoordinated actions of rationally acting individuals. Even before the concept was introduced by Sartre and developed by Elster, counterfinality was considered by many scholars. Some defined counterfinality as a type of social paradoxes and dilemmas, others-as an outcome of social interaction. Description and analysis of such social ...
Added: April 16, 2022
Coverings in the Category of Principal Bundles
Gonchar T., Yakovlev E., Russian Mathematics 2021 Vol. 65 No. 4 P. 22–43
Исследуется категория регулярных накрытий заданного гладкого главного расслоения. Под накрывающим отображением одного главного расслоения на другое понимается морфизм в категории главных расслоений, состоящий из накрывающих отображений структурных групп, тотальных пространств и баз. Основные результаты: построение инварианта регулярного накрытия, представляющего собой подпоследовательность гомотопической последовательности базового расслоения, теорема существования накрытия с заданным инвариантом, критерии морфизмов и изоморфизмов, ...
Added: September 21, 2021
Causal Properties of Fibered Space-Time
Yakovlev E., Gonchar T., Mathematical notes 2019 Vol. 106 No. 1 P. 118–132
On the space of a principal bundle, a Lorentzian metric and a time orientation are given that are invariant with respect to the action of the structure group. These objects form a fibered space-time and, in the case of spacelike fibers, induce the same structures on the base. The following causality conditions are discussed: chronology, causality, stable and ...
Added: October 7, 2019
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